Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yawcult.co.

.j.p. That's Y-A-K-U-L-T.C-O.J-P. When it comes to a guide for your gut, count on Yacolt.

This is Scientific American's 60-second science. I'm Christopher in Talata. Got a minute?

If you're looking for signs of past life on Earth, some of the evidence is obvious.

Finding of trilobite fossil is a no-brainer. We all can understand that one. Or a dinosaur bone.

Jack Mustard, a Brown University geologist.

He says less obvious signs of ancient life can be found in glass, specifically

impact glass, which forms when asteroids slam into the planet, rapidly heating and melting

the rocks around them. Impact glass on the earth can preserve biological material in a kind of

capsule, a time capsule, if you will.

Here on Earth, for instance, scientists have found impact glass containing ancient plant matter

and other chemical signatures of life. Jack and his colleague Kevin Cannon have now spotted

the same sort of impact glass on Mars, using the spectrometer on the Mars reconnaissance orbiter,

which means Martian glass might also hold evidence of life, if the red planet ever harbored life,

that is.

The glass is more than just a potential time capsule.

Its mineral structure also makes it an attractive snack for certain microbes.

Microbes eat geologic materials, but it can be a really slow process.

Glass, on the other hand, is something that is kind of like having a Dorito for a microbe,

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